How are red blood cells adapted to their function?They have a biconcave shapeThey contain many mitochondriaThey have a large nucleusThey have a biconvex shape2Which of these is a function of blood plasma?To carry carbon dioxide around the bodyTo defend against pathogensTo carry oxygen around the bodyTo help the blood clot at the site of a wound3Which blood vessel carries deoxygenated blood away from the heart to the lungs?AortaVena cavaCoronary arteryPulmonary artery4In which blood vessel does the left ventricle of the heart pump oxygenated blood around the body?Vena cavaPulmonary arteryPulmonary veinAorta5Which of the following is a description of a vein?Thin walls and no valvesThick walls and no valvesThick walls and contains valvesThin walls and contains valves6The human circulatory system is:A closed circulatory systemA single circulatory systemA double circulatory systemAn open circulatory system

Describe the function of red blood cells, white blood cells and platelets.Red blood cells are responsible for carrying oxygen. White blood cells fight bacterial infections. Plateletsform clots to close cuts.2 Use diagrams to describe how the three blood vessel types differ in their structure and function.Students’ diagrams should contain the following:Arteries: the largest blood vessel, with thick muscular walls designed to cope with high pressure. Theytravel away from the heart.Veins: similar in size to arteries but without much muscle in the walls. They carry blood back to the heartand contain one-way valves.Capillaries: the smallest blood vessel. They connect arterioles (artery branches) and venules (veinbranches) and enable the exchange of water, oxygen and nutrients between the blood and surroundingtissues.3 Use Figure 4 to describe the path a red blood cell takes as it moves through the body from the heart.The path of the blood through the body from the heart is artery, arteriole, capillaries, venules, vein, thenback to the heart.4 Rewrite your answer to question 3, adding the names of the veins and the arteries involved.The path of the blood through the body from the heart (with the names of the arteries and veins) isaorta artery, arteriole, capillaries, venules, vein, vena cava, heart.5 Identify the body system that supplies the nutrients that the circulatory system moves around thebody.Digestive systemApply and analyse6 Instead of the blood travelling directly from the lungs to the rest of the body, the blood returns to theheart first. Explain one advantage of the blood returning to the heart before moving around the body.The blood returns to the heart first instead of travelling directly from the lungs to the body because theblood now contains oxygen and the heart muscle itself needs oxygen so that it can keep pumping.

What is the main function of red blood cells?Multiple choice question.fight infectionspromote blood clottingtransport gases

Both red blood cells and white blood cellsMultiple Choiceare derived from the same type of stem cell.have a nucleus.have hemoglobin.have mitochondria and other organelles.can carry carbon dioxide in the blood.

What is the primary function of red blood cells in the body?a) Transport oxygenb) Aid in digestionc) Produce antibodiesd) Transport oxygen to body tissues

List and briefly describe the major functions of blood